Git commits in Moodle x.x.x by ISHIKAWA Takayuki

commit 69101b43925b493a6802b9644436b6799801a123
Author: ISHIKAWA Takayuki <rechka_osaka@yahoo.co.jp>
Date:   Thu, 14 Jun 2012 20:29:33 +0800
Tag:    v2.4.0-beta

MDL-33757 gradebook: Adding support to sort userlist by email address

commit 81bf2a1a1d308ae49062a0c5f821596273996566
Author: ISHIKAWA Takayuki <rechka_osaka@yahoo.co.jp>
Date:   Thu, 14 Jun 2012 20:29:33 +0800
Tag:    v2.2.4

MDL-33757 gradebook: Adding support to sort userlist by email address

commit d0d407f0bb7a3996e551fb9aa4a653a5c9bd28f9
Author: ISHIKAWA Takayuki <rechka_osaka@yahoo.co.jp>
Date:   Thu, 14 Jun 2012 20:29:33 +0800
Tag:    v2.3.1

MDL-33757 gradebook: Adding support to sort userlist by email address